File: leblanc.jpg (9.5 KB)

I'm trying to identify an anime that aired on ETC Chile sometime between 2015 and 2018, although I think the anime itself was made in the mid-to-late 2000s.
The clearest memory I have is of an adult woman with long blonde (or possibly very light brown) hair, light-colored eyes, and a somewhat sensual appearance. I remember a scene where a teenage male protagonist arrives at her apartment. There is a blue-lit hallway, and at the end of it a door is open with bright white light coming from inside.
When he enters, he finds the woman in a bathtub. She appears to be dying, unconscious, or possibly dead. I don't remember seeing blood, and since this aired during the afternoon, it may not have been graphic. I think she was still wearing a loose white tank top, and it was soaked from the water. I also vaguely remember her drinking a beer earlier in the episode.
The protagonist then carries her in his arms while trying to help or save her.
The overall atmosphere was serious, melancholic, and possibly neo-noir, with cold blue lighting. I vaguely remember there may have been sci-fi elements or even mecha, but I'm not confident about that and could be mixing memories from another anime that aired on the same channel.